Examine source code of Vocaroo HTML5 Player

{
  "manifest_version": 2,
  "name": "Vocaroo HTML5 Player",
  "version": "1.1resigned1",
  "description": "Uses Vocaroo's download links to replace Vocaroo's flash audio player with the HTML5 audio element.",
  "icons": {
    "48": "icons/border-48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.vocaroo.com/i/*"
      ],
      "js": [
        "VocarooHTML5Player.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{8d608045-4e62-4940-ac4e-4ba5f8151106}"
    }
  }
}